• Explore and Discover One of the Last Frontiers in the World ...

    Jewel Cave

    National Monument South Dakota

Natural Features & Ecosystems

Calcite rafts in Jewel Cave

Thin sheets of calcite formed on the surface of an ancient pool of water.  The pool is now gone, and only these delicate "calcite rafts" remain.

NPS Photo

The primary resource of Jewel Cave National Monument is the cave itself. Jewel Cave is a unique world of sparkling calcite crystals, delicate strands of gypsum, and other spectacular cave formations. It contains large rooms strewn with boulders, tight crawlways, and dark fissures leading into the unknown.

Did You Know?